After detecting a plume at the end of EX-1004-Leg II_ROV002 on Kawio Barat, we hoped to find its source during today’s dive. Today’s initial bottom target was 04º 40.590'N 125º 05.236' E. We found the source of the plume almost immediately after reaching the bottom. At a depth of about 1850m we encountered a sulfur vent with a number of point sources. Surrounding the vent was a large amount of yellow and black molten sulfur, multiple species of hot-vent shrimp, a 10cm scale worm, and a small patch of stalked barnacles. After departing from the vent, the ROV ascended the summit ridge and encountered fields of sulfide chimneys with vast aggregations of stalked barnacles at their base. The chimneys varied in terms of age and venting characteristics. Some chimneys were fairly oxidized and others covered in white sulfide. Some chimneys were venting clear fluid while others were venting black smoke. Though there is plenty more to discover on Kawio Barat, we are moving to other targets for subsequent dives.